<template>
  <div>
    <ul>
      <li v-for="item in myArr" :key="item">{{item}}</li>
    </ul>
    <button @click="fn">走一走</button>
  </div>
</template>

<script>
export default {
data(){
  return {
    myArr: ["帅哥", "美女", "程序猿"],
  }
},
methods:{
  fn(){
    this.myArr.push(this.myArr[0])
    this.myArr.shift()
  }
}
}
</script>

<style>

</style>